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System-board LEDs

The following illustrations show the light-emitting diodes (LEDs) on the system board.

Figure 1. System-board LEDs
System-board LEDs
Table 1. System board LEDs description and actions.
LEDDescription and actions

1 Fan 1 error LED

2 Fan 2 error LED

LED on: an error has occurred to the fan the LED represents.

3 DIMM 3 error LED

4 DIMM 4 error LED

LED on: an error has occurred to the DIMM the LED represents.

5 FPGA power status LED (green)
The FPGA power LED helps to identify different FPGA errors.

  • LED blinking rapidly (four times per second): The FPGA permission is delayed.

  • LED blinking slowly (once per second): The FPGA is ready to power on.

  • LED on: The FPGA power is on.

6 FPGA heartbeat LED (green)This LED indicates power-on and power-off sequencing.
7 System power LED
The states of the system power LED are as follows:

  • Off: No power supply is properly installed, or the LED itself has failed.

  • Flashing rapidly (four times per second): The server is turned off and is not ready to be turned on. The power-control button is disabled. This will last approximately 5 to 10 seconds.

  • Flashing slowly (once per second): The server is turned off and is ready to be turned on. Press the power-control button to turn on the server.

  • On: The server is turned on.

8 XCC status LED
The states of the XCC status LED are as follows:

  • On: XCC is alive.

  • Off: XCC is not ready or not alive. The LED is in this state when the server is first connected to the power source. It does not turn on until the SSP (Synchronous Serial Port) is ready.

9 XCC heartbeat LED (green)This LED indicates the XCC heartbeat and boot process:

  • LED blinking rapidly: XCC code is in the loading process.

  • LED going off momentarily and then starts blinking slowly: XCC is fully operational. You can now press the power-control button to power on the server.

10 System error LED (yellow)LED on: an error has occurred. Complete the following steps:

  • Check the identification LED and check log LED and follow the instructions.

  • Check the Lenovo XClarity Controller event log and the system error log for information about the error.

  • Save the log if necessary, and clear the log afterwards.

11 DIMM 2 error LED

12 DIMM 1 error LED

LED on: an error has occurred to the DIMM the LED represents.